granicus.if.org Git - postgresql/blob - src/backend/utils/mb/conversion_procs/utf8_and_sjis/utf8_and_sjis.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  *        SJIS <--> UTF8
   4  *
   5  * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
   6  * Portions Copyright (c) 1994, Regents of the University of California
   7  *
   8  * IDENTIFICATION
   9  *        src/backend/utils/mb/conversion_procs/utf8_and_sjis/utf8_and_sjis.c
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13
  14 #include "postgres.h"
  15 #include "fmgr.h"
  16 #include "mb/pg_wchar.h"
  17 #include "../../Unicode/sjis_to_utf8.map"
  18 #include "../../Unicode/utf8_to_sjis.map"
  19
  20 PG_MODULE_MAGIC;
  21
  22 PG_FUNCTION_INFO_V1(sjis_to_utf8);
  23 PG_FUNCTION_INFO_V1(utf8_to_sjis);
  24
  25 extern Datum sjis_to_utf8(PG_FUNCTION_ARGS);
  26 extern Datum utf8_to_sjis(PG_FUNCTION_ARGS);
  27
  28 /* ----------
  29  * conv_proc(
  30  *              INTEGER,        -- source encoding id
  31  *              INTEGER,        -- destination encoding id
  32  *              CSTRING,        -- source string (null terminated C string)
  33  *              CSTRING,        -- destination string (null terminated C string)
  34  *              INTEGER         -- source string length
  35  * ) returns VOID;
  36  * ----------
  37  */
  38 Datum
  39 sjis_to_utf8(PG_FUNCTION_ARGS)
  40 {
  41         unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
  42         unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
  43         int                     len = PG_GETARG_INT32(4);
  44
  45         CHECK_ENCODING_CONVERSION_ARGS(PG_SJIS, PG_UTF8);
  46
  47         LocalToUtf(src, dest, LUmapSJIS, NULL,
  48                            sizeof(LUmapSJIS) / sizeof(pg_local_to_utf), 0, PG_SJIS, len);
  49
  50         PG_RETURN_VOID();
  51 }
  52
  53 Datum
  54 utf8_to_sjis(PG_FUNCTION_ARGS)
  55 {
  56         unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
  57         unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
  58         int                     len = PG_GETARG_INT32(4);
  59
  60         CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_SJIS);
  61
  62         UtfToLocal(src, dest, ULmapSJIS, NULL,
  63                            sizeof(ULmapSJIS) / sizeof(pg_utf_to_local), 0, PG_SJIS, len);
  64
  65         PG_RETURN_VOID();
  66 }